<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<nav class="navbar navbar-default" th:fragment="nav">
    <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                    data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                <span class="sr-only">Lumen论坛</span>
            </button>
            <a class="navbar-brand" href="/">Lumen论坛</a>
        </div>

        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="active"><a href="/">首页 <span class="sr-only">(current)</span></a></li>
                <li><a href="#">收藏</a></li>
                <li><a href="/publish">发布帖子</a></li>
            </ul>
            <form class="navbar-form navbar-left">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="搜索话题">
                </div>
                <button type="submit" class="btn btn-default">搜索</button>
            </form>
            <ul class="nav navbar-nav navbar-right">
                <li class="dropdown" th:if="${session.user} != null">
                    <!--th:if 模板的判断语句, 可以直接通过session.value来访问session中存储的值 -->
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
                       aria-expanded="false" th:text="${session.user.getName()}"><span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a href="/profile/questions">我的问题</a></li>
                        <li><a href="/logout">退出登录</a></li>
                    </ul>
                </li>
                <li th:if="${session.user} == null">
                    <a href="https://github.com/login/oauth/authorize?client_id=3b6ffe53042b2e77e356&redirect_uri=http://localhost:8889/callback&scope=user&state=1">登录</a>
                </li>
            </ul>
        </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
</nav>
</body>
</html>